Power supplies, bias tees, and coupling capacitors not listed Downconverter and Upconverter board are courtesy Ed Cullerton of FNAL 1320 MHz LO input - BNC-845 synthesizer - YF-25 four-way splitter Downconverter board signal chain U11 ADC-15-4 16 dB directional coupler U7 PAT-4 4 dB attenuator U6 LFCN-1400 1400 MHz low-pass filter U8 PAT-3 3 dB attenuator U10 SYM-25DMHW level 13 mixer U9 PAT-1 1 dB attenuator U14 ADL5535 17 dB amplifier U13 PAT-1 1 dB attenuator [ 30 MHz third-order low-pass filter from discrete passives ] U31 PAT-1 1 dB attenuator U15 ADC-10-4 10 dB directional coupler Downconverter board LO distribution U23 JDC-10-4 10 dB directional coupler U20 PAT-1 1 dB attenuator U24 PHA-1 15 dB amplifier U21 PAT-1 1 dB attenuator U22 WP4N 4-way splitter U26 PAT-1 1 dB attenuator U27 QCC-20 2-way splitter U4 PAT-3 3 dB attenuator U5 PHA-1 15 dB amplifier U3 PAT-8 8 dB attenuator Digitizer output channel U4 AD9781 14-bit dual DAC [ 44 MHz notch / 145 MHz band-pass filter from discrete passives ] T1 TCM4-19 balun - VLF-225 225 MHz low-pass filter Digitizer input channel T1 TCM4-19 balun [ 60 MHz first-order low-pass filter from discrete passives ] U2 AD9653 16-bit quad ADC 165 MHz output from Digitizer U1 LMK010801 clock divider T1 TCM4-19 balun Upconversion LO (1155 MHz) generator - ZX60-33LN-S 18 dB amplifier - F-19570 1155 MHz four-section tubular filter, 45 MHz BW - ZX05-43MH-S level 13 mixer Upconverter board signal chain U10 PAT-2 2 dB attenuator U11 ADL5535 16 dB amplifier U25 PAT-3 3 dB attenuator U24 RLP-176 176 MHz low-pass filter U4 JYPQ-160 90 degree hybrid U5/U6 PAT-2 2 dB attenuator T1/T2 ADT4-1T transformer U22 ADL5371 quadrature mixer U17 PAT-1 1 dB attenuator - F-19571 1300 MHz four-section tubular filter, 45 MHz BW U18 PAT-1 1 dB attenuator U21 PHA-1 15 dB amplifier U19 PAT-1 1 dB attenuator U14 LFCN-1400 1400 MHz low-pass filter U23 ADC-15-4 15 dB directional coupler U26 HMC349 absorptive switch Upconverter board LO distribution U29 ADC-15-4 15 dB directional coupler U1 PAT-1 1 dB attenuator U2 QCC-20 two-way spliter U15 PAT-3 3 dB attenuator U20 PHA-1 15 dB amplifier U16 PAT-7 7 dB attenuator 1300 MHz Loopback - - 11 dB SMA attenuator - ZRL-1150LN 29 dB amplifier - ZFSC-2-372-S two-way splitter - - 6 dB SMA attenuator